William m



(No Model.)

W. M. HOERLE.

LAMP.

Patented July 15, 1890.

f UNITED STATES PATENT OFFICE.

\VILLIAM M. HOERLE, OF ALLEGHENY, PENNSYLVANIA, ASSIGNOR TO THE I PITTSBURGH BRASS COMPANY, OF SAME PLACE.

LAM P.

SPECIFICATION forming part of Letters Patent N0. 32,489, dated July 15, 1890. Application filed December 16, 1889. Serial No. 333,871. (No model.)

To all whom it may concern.-

Be it known that 1, WILLIAM M. HOERLE, a resident of Allegheny, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Lamps; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to central-draft lamps,

its object being to overcome certain defects in this class of lamps as heretofore constructed, and to these ends comprises certain improvements in the wick-raisin g mechanism and the flamespreader of the burner, as will be fully hereinafter set forth and claimed.-

To enable others skilled in the art to make and use my invention, I will describe the same more fully, referring to the accompanying drawings, in which- Figure 1 is a vertical central section of a lamp constructed according to my invention, and Fig. 2 is a perspective viewof the flamespreader.

Likc letters indicate like parts.

-In an application for Letters Patent filed by me on the 13th day of May, 1889, Serial No. 310,508, I have set forth and described a central-draft lamp, and it is to such a form of lamp that my present improvements relate,

0 though they may of course be applied to lamps of the same general class.

In the drawings, a is the fount or bowl, having the central-draft tube 1) secured therein, the bottom of said fount a being supplied with any suitable air-entrances for the passage of the air up through the central tube Z). Surrounding the central draft-tube b is the wickraising tube 0, having the teeth 0 arranged around its upper end in the manner and op- 0 erated in the way described in the application filed by me, as hereinbefore mentioned. Pivoted to the lug d, or other suitable projection at the lower end of the wick-tube c, is the straight wick-raising rod said wick-raising rod having a notch or notches 6 cut at suitable intervals therein. These notohes e are preferably cut at an acute angle, so that when the rod 6 is raised and the notches e engage with the edge of the opening through which the rod (2 passes in the top of the fount the said rod will be held more securely in its raised position. An opening f is formed in the top of the fount a, and over said opening I place the cap g, which is soldered or otherwise se cured to the fount. The cap g has the open- 5 5 ing formed therein through which the wickraising rod 6 passes.

One of the inconveniences hitherto encountered in the use of this form of lamp has been due to the fact that when the fount is full of oil and said fount is tilted or shaken in changing the position of the lamp a certain amount of oil escapes through the customary opening in 'the top of the fount formed for the Wickraising rod. Although the amount of escaping oil may be small, yet it is sufficient to render the top of the'fount oily and disagreeable to handle. To obviate this and prevent the escape of the oil, I employ the cap 9 above referred to, which extends up above the fount, and I insert at the base of the cap 9 the splasher-guard 71, said base-piece or splasherguard being cup-shaped or convex on its lower surface and having an opening 72/ therein for the passage of the wick-raising rod 6. 75

It is readily apparent that by having the convex basc piece or splasher-guard h any oil that may be splashed against said base will quickly drop back into the fount, and that before a sufficient body could gather within the cap g to escape through the opening for the rod therein the oil will tlow back into the fount and all liability of escape of oil is thus overcome. To further protect the convex basepiece h, I surround it with the flange i, leaving a slight space in said flange for the full play of the rod 6. This flange serves to defleet the oil from the base 71, and from the above construction it is practically impossible for the oil to escape, thus insuring a clean 0 exterior for the fount.

The flame-spreaderj consists of the perforated cylinder having the outwardly-extending flanges 71; 7t" indented to allow the air to pass up from the central draft-tube on the outside of the flamespreader, producing thereby a steady flame, as is fully set forth in the aforementioned application. I The spreader is supported on the annular shoulder 1) in the central draft-tube, the lower IOO .obtaiued being flickering and rather red.

\Vhere the inwardly-extending flanges are employed, however, the air on passing up through the flame will strike the first flange Z audits upward flow be retarded thereby and part of the airbe deflected throughthe perforations below the flange, and the remainder, after passing the flange I, will strike the flange Z and be retarded and deflected through the perforations below it, the flange Z extending inwardly farther than the flange Z, as shown in Fig. 1. The air passing the flange Zwill of course pass through the perforations between it and the cap, but it is evident that its volume is not great and that the flanges cause a more even feeding of the air tl1roughoutthelength of the perforated IlUTlOSDl'OiUICIT, the flame produced beinglong, white, steady, and of great illuminating-power. I find from practical use that the flame is m uch improved by the use of one of these inwardly-entelnling flanges, but that the two flanges located at about the points illustrated give the best re sults.

The flame-spreader may be formed in any suitable way; but I find in practice that it is most durable and rigid when constructed as shown, the spreader being formed of perforated tube on and perforated cup n. The lower tube m has formed at its base the outwardlyextending flange 7t and at its top the in wardly-extending flange Z, the tube being formed to this shape and the two flanges properly bracing it. The upper on p or tube n is formed with the top 1) and with the ontwardly-extemling flange 7., the base of the cup fitting over the tube m and being rigidly secured thereto. The flange l is formed of a separate ring or washer, which is held in place by annular depressions, being spun in the cup as shown.

The spreader can be made cheaply when having such construction and the several flanges add strength and rigidity to it.

\Vhat I claim as my invention,and desire to secure by-Letiers Patent, is

1. In a central-draft lamp, the combination, with the lamp-fount and wick-raising rod, of the cap g, having the splasher-guaad It at its base, said cap and smasher-guard having openings for the passage of the rod, substantially as and for the purposes set forth.

2. In a central-draft lamp, the combination, with the lamp fount and wick-raising rod, of the cap g, having the splasher-guard 71. at its base, said cap and splasher-gnard having openings for the passage of the rod, and the flange 1, depending from the splasher-gnard, substantially as and for the purposes set forth.

In a eentral-draft lamp, a flame-spreader having straight cylindrical perforated walls and a closed top and provided with one or more annular flanges extending inwardly therefrom, substantially as and for the pur poses set forth.

-l-. In a central-draft lamp, a flame-spreader having straight cylindrical perforated walls and a closed top, and having the inwardlyextending flanges Z Z at different heights therein, the upper flange Z being wider than the lower flange I, substantially as and for the purposes set forth.

5. In a central-d raft lamp,a flan1e-s1')read(n' formed of the perforated tube 917, having an ontwardly-extendin flange la at the base and the inwardly-extending flange I at the top, and the perforated cup 22, having the outwardlyextending flange It at the base and fitting around the upper end of the tube on, substantially as and for the purposes set forth.

In testimony whereof I, the said \VILLIAM M. IIOERLE, have hereunto set my hand.

WILLIAM M. IIOERLE. 'Witnesses:

J. N. Coons, Rom. D. 'loT'rnN. 

